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The Community Seismic Network and Quake-Catcher Network: enabling structural health monitoring through instrumentation by community participants

Kohler, Monica D. and Heaton, Thomas H. and Cheng, Ming-Hei (2013) The Community Seismic Network and Quake-Catcher Network: enabling structural health monitoring through instrumentation by community participants. In: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems. Proceedings of SPIE. No.8692. International Society for Optical Engineering , Bellingham, WA, Art. No. 86923X. ISBN 9780819494757. https://resolver.caltech.edu/CaltechAUTHORS:20130920-082322579

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Abstract

A new type of seismic network is in development that takes advantage of community volunteers to install low-cost accelerometers in houses and buildings. The Community Seismic Network and Quake-Catcher Network are examples of this, in which observational-based structural monitoring is carried out using records from one to tens of stations in a single building. We have deployed about one hundred accelerometers in a number of buildings ranging between five and 23 stories in the Los Angeles region. In addition to a USB-connected device which connects to the host’s computer, we have developed a stand-alone sensor-plug-computer device that directly connects to the internet via Ethernet or wifi. In the case of the Community Seismic Network, the sensors report both continuous data and anomalies in local acceleration to a cloud computing service consisting of data centers geographically distributed across the continent. Visualization models of the instrumented buildings’ dynamic linear response have been constructed using Google SketchUp and an associated plug-in to matlab with recorded shaking data. When data are available from only one to a very limited number of accelerometers in high rises, the buildings are represented as simple shear beam or prismatic Timoshenko beam models with soil-structure interaction. Small-magnitude earthquake records are used to identify the first set of horizontal vibrational frequencies. These frequencies are then used to compute the response on every floor of the building, constrained by the observed data. These tools are resulting in networking standards that will enable data sharing among entire communities, facility managers, and emergency response groups.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1117/12.2010306 DOIArticle
http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1680836PublisherArticle
ORCID:
AuthorORCID
Heaton, Thomas H.0000-0003-3363-2197
Additional Information:© 2013 SPIE. We gratefully acknowledge support from the Betty and Gordon Moore Foundation, National Science Foundation (EAR-1028006), George Housner Earthquake Engineering Research Endowment (EAS-41212), Fred L. Hartley Family Foundation, and the Croucher Foundation.
Funders:
Funding AgencyGrant Number
Gordon and Betty Moore FoundationUNSPECIFIED
NSFEAR-1028006
George Housner Earthquake Engineering Research EndowmentEAS-41212
Fred L. Hartley Family FoundationUNSPECIFIED
Croucher FoundationUNSPECIFIED
Subject Keywords:CSN, QCN, cloud services, structural health monitoring
Series Name:Proceedings of SPIE
Issue or Number:8692
Record Number:CaltechAUTHORS:20130920-082322579
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20130920-082322579
Official Citation:Monica D. Kohler ; Thomas H. Heaton ; Ming-Hei Cheng; The community seismic network and quake-catcher network: enabling structural health monitoring through instrumentation by community participants. Proc. SPIE 8692, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013, 86923X (April 19, 2013); doi:10.1117/12.2010306
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41435
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:20 Sep 2013 19:22
Last Modified:03 Oct 2019 05:49

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